Table 1.

 Evaluation by students (n = 172) of the presentation using a questionnaire, scale from “fully agree” (1) to “disagree” (4)

Criteria	3D group (n = 90)	Control group (n = 82)	p Value
	Mean (range)	Mean (range)
Satisfaction with the presentation	1.2 (1–3)	1.3 (1–4)	0.14
Useful learning aid	1.4 (1–3)	1.6 (1–4)	0.02
Intelligibility for cataract surgery	1.7 (1–3)	1.7 (1–3)	0.69
Intelligibility for glaucoma surgery	1.6 (1–3)	1.8 (1–3)	0.03
Improvement of spatial ability	1.4 (1–3)	1.7 (1–4)	0.01